145. Configuring the Handling of Query Parameters

Jul 15, 2026 05:37 · 1:50 · English · Whisper Turbo · 2 Cynhadledd
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
So in the last lecture,
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
we tried to improve our application a bit more,
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but the issue is our query parameters are gone whenever we
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navigate away from our single server component to the added server component,
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for example.
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So we want to preserve them because we already set this
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information at the point of time we visit a single server.
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Now we want to preserve this information once we navigate one step further
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to the added server component.
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To preserve that information,
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we get a simple way of doing so.
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In the server component where we navigate,
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we can pass another property or add another
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property to this JavaScript object we use to configure our
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navigation.
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And here we get the query params handling
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property.
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Now query params handling takes a string as a value
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and this could be merge to merge our old query
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params with any new we might add here.
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
Now we don't add any new ones,
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
so we can simply choose preserve instead and
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preserve, which will overwrite the default behavior,
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which is to simply drop them.
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
and make sure that the old ones are kept.
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Now if we were to add new ones here,
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the old ones would actually overwrite the new ones,
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
so we should use merge in this case.
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
But since we don't add new ones,
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preserve should make sure that we don't lose them.
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So now if you click on this again and click edit server,
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now you see allowEdit equal to zero is still set.
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And therefore on the dev server,
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where it is set to 1 if we click edit server,
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
we do see the edit menu again.
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
So query params handling here,
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S… Speaker 1 (145. Configuring the Handling of Query Parameters)
super important,
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super useful to know,
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to make sure you don't lease the information you had before.

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